Locomotive-boiler furnace.



G; B. MOORE.

LOCOMOTIVE BOILER FURNACE.

APPLICATION FILED FEB.1 4, 1912.

1,115,956. Patented N0v.3,1914.

ztzm w CHARLES E. EEKOORE GE EVANSTON, ILLIN-OIS, ASSIGNGR 'IS AMERICA? ARCH COMPANY, HE?! YSRK, N. 2., A CCRPGRATION OF NEW YORK.

ZGGGZEOTFVE-BOILEE FURNACE p Inlay refrmtory commoni v' called furnaces to ix I r deflecting inches, for the x-e 'unmfai zr-bjects i pr fiat'ia a rafrnctory :z-s'iv and quickly insilai 0.13 n Y :n :011 are .ii 1 can be is easy is m; 12.; parts of which n -adi1y i lllOYiB-"l tint: pur- "bf smiling y m'afiess' if: the side sheets and fine 'shei; of file firebox and xvii-h shali comprise interchangeable mem- "i's; and to provide an arch a form thai; shall matm iaiiy prolong stay oftiie, fuel and suspended narticiss in the firebox and as in the admixing of die firebox the igniting of the am? the particles cari-isd 92693 Y Earths: ob ect to provicie an-1mprnved refractory arch constrnstmn having in nut-fined which pt sd, for installa- IW: that are 9:21 iuv-circuiat the shzzracteristics he shall be particularly 50: and in locnmc I *med Wiih pins] -szn; )orm is; {:0 prevpozrfinz stabil: ity 21 r in, ween tubes. My invmbicm in an arch having the haracte-ristics mantionefi and by which and otnzar attained. sntian :liSO cansiisis in the several in'zm-nvcnieri the various cnnstru-ztions and V mnin: JOBS of 322-, hereinafter de- 3 and partic zim-iymaimed 011%; in the Ief ciaims.-

he :iccon'igmniiing drawingsi farming specification, and iilustrating i embodiment cf inventionz i igm'e l is a verticaL centmL Lmgituuinpi SifiiiOIi a,- ioaom-stive firebox. equipped ifi-iih a Wide span refmetoiy arch 0'1 bufiie vahadvivg m invenfii n;- 1

arch sti-u 'cure 0i mronmti was i Specificafim: of Letters Patent.

Julie-aim ting arch panei bricks; and F 2 8 J3 L from the g with Fatentsd N av. 3 315 14 Ssrial No. 677,562.

. the: fire-'00:; on tiic i i I SilOWf a fiop flew the nrch' 1* ig. 3 if" a transverse vei-fiicai secfirms! Yam: of the fire-i103: C11 ti line 3-4 0" I i and shows an end X f the firebox i1 ies to the arch tubes on the line M4- 1; i; L a ti'ansvei'sa f1:

tinnai vinw 01" the firdmx'and {15 arch z t right angles to thg arch tuber: on the, line of Fig. l; 6 is an enlzug'ad perspective view of one of the commie tax-3 arch span or dining bricks; Fig. an eniargici perspeetive View" of ans 0*? the m is a vei'ticai, lrmgitu'liiiai sectimm i View 0. the refractory arch 0n the My inwntion may be embndied I Occupying various positions time firebox and having different specific futx ctious. 1 have, however, confined the iihisti'at ion of the invention to so-caiieci frent arches, but I Wish it to be understood that my invention is not limited this specific form of 8f;- arch.

A so-caiied from arch usually occupies an inclined position in the firebox extendin substantially from side to side therein. anu. having its fm'ward and. in substantial abut men's with the flue sheet. The principai function of these arches is to cieflcct the box out" of their ciimct line of flow to the fines and to cause them "to travel back mid form in the firelnox thez'eby not only distributing their heatto sub st-intiaiij; the Whole interior surface 0% "-1- k. v 1 4 -1 v 4.1 Reflux, (inn especm iicing 0 1i, .1 1e

length of crown sheet but also serving to admix or coz'nmingle the various straw $5 of and thereby in. ahg complete combustion of the fuel. A second. l'esuit accomj ilisi'imi by the deflection of the gases is that they me retained reby i the firebox long enough to ncgznn 11i? com- 190 plate cgmbustion before the), el came through the fiiies.

Front arches constructed in accqzdance my invention not eniy perform the fun'ctians above menfiioned, but 11150 is? m5 ssn 0f their comparative thinness at- V min suhstantiaiiy the maximum tesizpegz'ar tux-e of the fisebori gases and thereby as nuz in the ignitinn of the Onmmmg gases and final particles carried 0}? said gases. 1.1%,:

A locomotive firebox, as illustrated in the drawings, is made up of a-flue sheet 2, side sheets 33, a crown sheet a and a rear sheet 5. The firebox has a grate 6 and the rear sheet is provided with a fueldoorway 7. Flues 8 lead fcrwardfrom the flue sheet.

The fire box, illustrated, is equipped with" rear sheet and serving to increase the circulation of water between the. front and rear water legs of the firebox. It isr'eadily apparent that in case more than two tubes are used in a wide firebox, two or more identical arched structures may be provided,

one between each adjacent pair of tubes making a substantially continuous arch.

My invention is characterized by the feature that my improved arch is built up of one or more transversely arranged self-supporting rows of panel bricks, sa-id'rows being of inverted V shape and resting wedgingly against the arch tubes at the sides of the arch proper, and said bricks abutting one another intermediately of the tubes, the individual bricks of each transverse row being held in'mutual wedging or arched alinenient by means of transversely positioned complementary span or alining bricks arranged like an inverted V andwedgingly abutting against the arch tubes at their lower ends. When the bricks are placed in position on the tubes they are mutually locked or held together by gravity, but the arch being made up of a plurality of brick members which do not become readily cemented together, not only permits the easy replacement of members which become damaged. or worn out, but it is, in a sense, flexible enough to accommodate itself to .chan esoi shape and dimensions of the firebox no to expansion and contraction, and hence it is protected against the disintegration which affects solid arches from this cause. v

The size of the bricks, other than that they must be long enough when duly fitted together to form an arch spanning the space between the tubes, are preferably formed as large as possible without being too large or heavyvto handle conveniently, and without bein too large to be passed readily throii'gh the I'GbOX doorway.

in the embodiment of my invention herein illustrated, alining bricks A, incomplementary pairs, are placed transversely of and in arched or wedging position in an inverted V-shepe on the tubes 9, the several pairs being held in spaced relation longitudinally of the tubes'by the panel briks B which constitute the main body of the arch. Steadying bricks C arearranged side by side in the relatively. narrow space between the side sheets and the tubes or arch proper.

germane These bricks G are inclined in wedging position to securely lock the arch against lateral swinging-"or destructive vibration, such as otherwise would often be caused to a considerable ertentbythe motion and jar of the locomotive when in use.

- The alining bricks or arch spans A' are made very ligbt, being relatively long and narrow or slender, but deep and strong '1 enough to answer their purpose. The outer f or lower endof each has transverse groove A to fitand rest upon the adjacent arch tube, while the inner or upper end is provided with a half tongue A and a half ,groove' A formed to lit a corresponding tongue and groove on the adjacent similar end of the abutting span brick and adapted to hold these complementary bricks in rigid coacting or abutting relation to aline the panel bricks B and -r n aintain them in mutual arched relation. The said tongues and grooves are preferably arranged parallelto the tube-engaging grooves on the opposite ends. The upper lateral edges or corners of the alining bricks or arch spans 21 are provided with gains A to accommodate the ends of the panel or cover bricks B which are held in alinement thereby.

I Each of the panel-or cover bricks B comprises a relatively thin rectangular top or web portion B and a substantially perimetrical depending flange B extending around the underside adjacent to the edges. The flange B serves to brace and strengthen the panel or cover and forms and contains a downwardly facing pocket B on the underside of the panel or cover adapted for retarding and mixing the firebox gases. The part of flange B which extends along the edges adjaceht to the alining bricks or arch spans A is slightly removed from the entreme end, thus providing on each end a projecting bearing-shoulder or flange B adapted to fit into and rest upon the ledge or gain A of the alining brick or arch span A. The part of flange B which extends along the other two sides is flush with the edges and serves as abutting means to bear the chief part of the wedging or arch pressure of the self-supporting panel or cover members B against each other. The flange 13* on the. tube-engaging side of each of those panels or covers which are adjacent to a tube is provided with a groove 13 adapted Y pair of relatively long narrow bricks grooved on their outer ends to fit the tubes and tongued and grooved at their inner or meeting ends to hold the sai'd alining bricks in fixed rela't e position.

i. A'locoinotiy-e boiler firebox having a pair of arch tubes spaced widely -apart therein, in combination with a refractory arch supported by said tubes and compris ing a pair of alining arched spans suitably spacedapart longitudinally of and resting on the tubes and a panel arched spa-n each side thereof consisting of a plurality of alined abutting bricks and which restson said tubes and lies between said alining spans and is held in alinen ent thereby, each of said panel bricks being formed to fit squarely against its neighbor and those at the ends being grooyed to fit the supporting tubes.

A locomotive boiler firebox having inclined arch tubes therein, in combination with a refractory front arch resting on and supported by said tubes and comprising a plurality of similar transverse rows of sub stantially identical panel or cover bricks each row consisting of a V-shaped arch span, each side of which contains more than one brick and which rests u-edgingly on and between said tubes, and transverse alining members extendingalong the edges of said rows of panel bricks and engaging the latter to hold them in alineine'nt.

6., A locomotive boiler firebox containing a plurality of longitudinally extending,

widely spaced and substantially parallel in;v

clined arch tubes, in combination with a refractory front arch therein arranged against the flue sheet and co-extensive 7 arched transversely of the firebox with the said arch tubes, said arch comprising a, transversely extending row or panel or cover bricks arranged in Vshaped Wedging or relationpon and between said tubes, and alining; members arranged in similar \l-shapcd or arched pairs and comprising complement-aryinterlocking ele meats resting" upon and extending between with the edges of said row of panel bricks to hold same in compressive alinement.

ity of light pairs of slender alining inem-- ,bers suitably spaced apart longitudinally A tubes at the side of and in engagement in the firebox and extending from tube to tube and arrangedin mutually supportingarched relation, and a row of ligl 1', thin panel bricks arranged between' 'admcent pairs of alining bricks, resting on the tubes" and comprising a plurality of panel bricks arranged between adjacent longitudinallyspaced alining members and held in alined position thereby, whereby the rows of .panel I bricks are substantially self-supporting.,

8. A locomotive boiler firebox 'havinga pair of arch tubes spacedidely apart therein, in combination-with a, refractory arch resting Wedgingly upon and between said tubes, and Wedging locking bricks ar:

ranged. between the said tubes and the 311' jacent sidesheets oi the firebox to preventthe spreading of the tubes diie to the wedging action of the arch, said arch comprising a series of panel bricks-wronged end to end and abutting one another in arched or i wedg-ing position and extending from tube to tube and rigid-alining members lying adjacent to the front and rear edges of said panel bricks and maintaining them in selfv sustaining arched o'r Wedging alinement.

In testimony whereof, I have hereunto i set my hand,- this 24th day of January, 1912,; inthe presence of two subscribing witnesses. v

CHARLES MOORE.

Witnesses:

JOHN R. Lnrnvnn, M. SIMON. 

